Brake shoe outer circle machining clamp

Abstract

The invention relates to the technical field of automobile part machining clamps, in particular to a brake shoe outer circle machining clamp. The brake shoe outer circle machining clamp comprises a rotary machining table, positioning mandrels, a lower fixed circular truncated cone and an upper fixed circular truncated cone, wherein the rotary machining table is in a disc shape, and two sides of the rotary machining table are respectively provided with two first mounting holes which vertically penetrate through the disc surface of the rotary machining table, the positioning mandrels are fixedlyarranged in the first mounting holes, the lower fixed circular truncated cone and the upper fixed circular truncated cone are arranged on the positioning mandrels in a sleeved mode, the fine end of the lower fixed circular truncated cone is arranged upwards, and the thin end of the upper fixed circular truncated cone is arranged downwards, the clamp can fix and machine two brake shoes at the sametime, and the end faces of the brake shoes are not in contact with the clamp, so that the problem that the machining precision of the outer circle surface is reduced due to the fact that the end faceof the brake shoe is uneven is solved, and the positioning hole of the brake shoe is clamped between the upper fixed circular truncated cone and the lower fixed circular truncated cone, so that the problem that the brake shoe is vibrated during machining due to the fact that the positioning hole of the brake shoe is in clearance fit with the positioning mandrel is solved.

Description

technical field [0001] The invention relates to the technical field of fixtures for processing automobile parts, in particular to a fixture for machining outer circles of brake shoes. Background technique [0002] The brake shoe belongs to the technical field of automobile brake parts, and comprises a web and a wing plate, and the wing plate is connected with the arc-shaped outer periphery of the web. It is used to wrap the friction plate to make the positioning of the friction plate more accurate. [0003] With the development of society and the increase of automobiles, traffic safety issues have become increasingly prominent. Among the traffic accidents caused by the problems of the vehicle itself, the traffic accidents caused by the failure of the braking system account for 45% of the total number of accidents. Therefore, it has very important practical significance to improve the design and manufacture level of the brake. At present, drum brakes are one of the main br...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the deficiencies of the prior art, the present invention provides a clamp for processing the outer circle of brake shoes, which can be fixed at one time and process two brake shoes at the same time. The end surface of the brake shoe does not contact the fixture, which solves the Unevenness will cause the problem of lower machining accuracy of the outer surface. The positioning hole of the brake shoe is sandwiched between the upper and lower fixed round tables, which solves the problem of vibration caused by the clearance between the positioning hole of the brake shoe and the positioning mandrel. question

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